baber/WOPTO huggingface dataset:
Patent GB-1436994-A (GB)
Title: Preparations of silver halide photographic emulsions
IPC: G03C7/388
Filed: 1974-07-03
Abstract: 1436994 Silver halide emulsions FUJI PHOTO FILM CO Ltd 3 July 1974 [3 July 1973] 29584/74 Heading G2C A process of dispersing at least one additive, selected from a coupler, an anti-oxidant, a filter dye and an ultravoilet absorbing agent in a photographic silver halide emulsion comprises (a) dispersing the additive in a hydrophilic colloid using as dispersion solvent an ester of a lower aliphatic acid which:- is liquid at room temperature; boils at temperatures higher than 250C under atmospheric pressure; is soluble in water in a proportion of not more than 10 wt. per cent at 25C; and dissolves water in a proportion of not more than 5 wt. per cent at 25C; and has the general Formula I, II or III R<SP>7</SP>-CH 2 -(CH 2 ) n -CH 2 -R<SP>8</SP> (III) wherein each of R<SP>1</SP> and R<SP>3</SP> represents an acyl group or alkoxy carbonyl group, each containing at most 8 carbon atoms or a group of Formula and each of R<SP>2</SP>, R<SP>4</SP> and R<SP>5</SP> represents an acyl or alkoxycarbonyl group, each containing at most 8 carbon atoms; each of R<SP>7</SP>, R<SP>8</SP> and R<SP>9</SP> represents an alkoxycarbonyl group containing at most 8 carbon atoms; R<SP>10</SP> represents any group that R<SP>2</SP> may be or hydrogen and n is 1 to 6; and (b) mixing the dispersion with a silver halide emulsion. Specified esters are glycerol triacetate, tripropionate and tributyrate; glycerol monolactate triacetate; tributyl citrate; acetyl triethyl citrate; acetyl tri-nbutyl citrate; di-2-ethylhexyl adipate; dioctyl sebacate. The ester may be mixed with a watersoluble or insoluble low boiling solvent and dispersion in the colloid can be prepared in the presence of a dispersing agent.
Patent GB-483747-A (GB)
Title: Improvements in or relating to processes for the treatment of magnesium or the production of magnesium alloys involving the handling of molten magnesium
IPC: C22B26/22
Filed: 1936-10-31
Abstract: In processes involving the handling of molten magnesium e.g. in the pouring, casting, or moulding of magnesium or the production of magnesium alloys, there is employed as a flux a mixture of magnesium fluoride with a sulphide of one of the metals magnesium, calcium, and aluminium, the flux treatment being carried out in an atmosphere of a reducing gas, such as hydrogen or hydrocarbons, or of an inert gas, such as argon.  Carbon, petroleum coke, graphite, carborundum, calcium carbide, or aluminium carbide may be added to the flux. Specification 465,421 is referred to.
Patent GB-171382-A (GB)
Title: Reducing gear for aviation engines
IPC: F02B61/04
Filed: 1921-11-07
Abstract: 171,382. Barbarou M. J. B. Nov. 13, 1920, [Convention date]. Toothed gearing.-In an aircraft having its propeller driven from the cam-shaft of the engine, the gear wheel c<1> on the cam-shaft is driven from a pinion b on the crank-shaft through two intermediate gear-wheels D, E the centres of which are adjustable towards or away from the adjacent wheels. Each wheel D, E is mounted by means of roller bearings G, H on a sleeve A which is eccentrically mounted on a hollow spindle B. The end of the sleeve A has teeth C adapted to be engaged by corresponding teeth on a plate K, which is secured to the gear casing by screws F after adjustment of the sleeve. The roller bearings H are arranged outside the planes of the edges of the teeth to allow an adequate depth of metal beneath the teeth. A ball thrust-bearing I prevents endways movement of the gear wheel. The Specification as open to inspection under Sect. 91 (3) (a) mentions Specification 157,075, [Class 80 (ii), Gearing, Variable-speed &c.]. This reference does not appear in the Speclfication as accepted.
Patent GB-354609-A (GB)
Title: Improvements in overhead contact line systems for electrically-operated vehicles
IPC: B60M1/23
Filed: 1930-10-03
Abstract: 354,609. Suspending cables. BADDELEY, G. F., 33, Merton Hall Road, Wimbledon, London. Oct. 3, 1930, No. 29652. [Class 36.] In an overhead contact line system for electrically operated vehicles, the conductors act alternately as contact wires and messengers, crossing in the centre of each space. The contact wires are suspended from the messengers by droppers, and, in order that the tension in the messenger portions of the wires may be the same as that in the contact wire portions, short droppers, adapted to allow free movement of the contact wires in the direction of their length, are provided at the points of crossing of the conductors. In the embodiment the conductor 11 is suspended from the conductor 13 by droppers 15, and, on the other side of the midspan, the conductor 13 is suspended from the conductor 11 by droppers 17. Short droppers 19 are fitted near the crossing places 21. Each dropper 19, Fig. 4, comprises a wire loop which encircles one conductor 13, the loop ends being fixed to blocks 21, 23 drawn together by a bolt 25 to grip the conductor 11. Means for regulating the tension in the conductors is shown in Fig. 5. The conductor 13 is coiled upon itself in a spiral 35 between clamps 33 which are suspended, through springs 31, from one of the suspension insulators 2.
Patent GB-770219-A (GB)
Title: Improvements relating to the ventilation and dust removal systems of ring spinning mills
Inventor: SUTCLIFFE RICHARD
IPC: D01H11/00
Filed: 1955-10-10
Abstract: 770,219. Cleaning textile spinning machines. TEXTILE AIR SYSTEMS, Ltd. Oct. 10, 1955 [Oct. 14, 1954], No. 29652/54. Class 120 (3). A ventilation and dust removal system of a spinning mill in which driving motors for the ring spinning frames are at the same end of each frame as a broken end suction unit, comprises at each frame an open exhaustion cowl or hood c which is connected, as by pipes d to the main ventilation system and is positioned over the discharge orifice at i of the discharge pipe a of the broken end suction unit with a gap therebetween so that the cowl receives the discharge from the pipe a and also draws air from the vicinity of the motor or motors driving the frame so as to exert a cooling action thereon and withdraw dust and fluff thereat. As shown, the system may comprise an overhead cleaner f a nozzle of which, on its travel along one side of the frame, passes through the gap.
Patent GB-427121-A (GB)
Title: Improvements in or relating to mechanism for retaining doors, windows and the like in an open position
IPC: E05F3/22
Filed: 1933-10-26
Abstract: 427,121. Stays ; door - operating mechanism; hinges. LOUKS, W. H., 15, Brecon Road, Handsworth, Birmingham. Oct. 26, 1933, Nos. 29658/33 and 30459/34. [Classes 65 (i) and 65 (ii)] A stay, or linkage for a spring door-closing device, comprising two arms pivoted together at one end and connected respectively to the door or the like and its frame at the other, has clutch means, at one of the pivots, brought into action, when the door has been opened to a predetermined position, to hold the door frictionally, by a projection on one clutch member engaging a similar projection on the pivot pin, which is adjustably fixed relatively to the other clutch member. Fig. 3 shows a joint between two arms 11, 13, the latter having a frusto-conical part 13<a> fitting in a corresponding part 11<a> of the other, the parts being held together loosely by a hollow-headed pivot pin 14 which is clamped to the member 13 in any desired position by a nut 16 with a serrated washer. The clutch members 11<a>, 13<a> are normally kept apart by a spring 18, but after a certain movement of the arms 11, 13 two inclined projections 14<e> inside the head of the pin 14 engage corresponding projections 11<e> on the part 11<a> and force the latter down into frictional engagement with the part 13<a>. The position at which this occurs is determined. by the initial position of the pin 14 relative to the arm 11 ; the parts 11<a> and the head of the pin 14 may be graduated to show how the pin should be set for any desired opening. The arrangement of one pair of projections 11<e>, 14e near the pivot axis and the other further away allows of movement through more than 180‹ if desired. In a modification, the clutch members may have flat engaging faces. One or each of the arms 11, 13 may be adjustable in length.
Patent GB-689806-A (GB)
Title: Pulldown device for rotary drilling apparatus
Inventor: ALEXANDER EMMETT LEE
IPC: E21B3/02
Filed: 1950-12-04
Abstract: 689,806. Pull-down devices. FAILING SUPPLY CO., G. E. Dec. 4, 1950, No. 29660/50. Class 85 In. a. pull-down device the drive to a kelly 1 from a concentrically mounted rotating tubular shaft 3 is through an automatic chuck head 90 of a type similar to that disclosed in Specification 653,554, the neck portion of said chuck being threadedly secured to the shaft 3 by a plate 97 secured to the chuck on the side opposite the neck, a drive sleeve 96 formed on the plate 97, a drive bush 101 secured in the sleeve 96, keys 94 formed on the bush and keyways 92 of the kelly.
Patent GB-315158-A (GB)
Title: Improved shoe-cleaning device for use on automobiles
IPC: B60R15/02
Filed: 1928-10-15
Abstract: 315,158. MacDonald, A. Oct. 15, 1928. Scrapers, pot. - A shoe-cleaning device adapted to be secured to the running-board of a motor vehicle comprises a plate 1 having a rectangular aperture preferably traversed by scrapers 26, a lid 13 hinged to the plate to open or close synchronously with the opening or closing of a hinged drop bottom 11, and brushes 29 are hinged to the lid and adapted to be used after the shoes have been scraped. The lid 13 and drop bottom 11 are secured to shafts 5, 8 respectively, which are journaled in bearings in the plate 1 and are provided with interengaging toothed segments so that the bottom 11 opens and closes in accordance with the opening and closing of the lid 13. Springs 15 tend to keep the lid open. The lid and bottom are held in the closed position by means of detents secured to a spring-pressed frame 20 and adapted to engage in apertures in the lid 13 and beneath the edge of the bottom 11. The detents are withdrawn by means of a foot-operated trigger 23 the bottom of which engages an apertured lug on the frame 20. The brushes 29 are hinged to the shaft 5 and are held in the inoperative position by means of catches 30 engaging in apertures 32 in the brush frame. The catches are secured to a pivotally-mounted rod 31 provided with a spring-pressed finger-piece, the actuation of which releases the brush frame allowing the brushes to fall to the horizontal position above the scrapers. The device may be provided with a kick-plate 37. A rubber mat may be provided on the top of the lid 13.
Patent GB-497625-A (GB)
Title: Improvements in or relating to apparatus for withdrawing a rectified operating current from an alternating current net for for signalling or like apparatus
IPC: H02M7/08
Filed: 1937-11-01
Abstract: 497,625. Exchange systems. MELARD, C. Nov. 1, 1937, No. 29853. Convention date, Nov. 2, 1936. [Class 40 (iv)] [Also in Group XXXV] An arrangement for supplying electric signalling apparatus, such as a telephone system, with smoothed rectified A.C. only when the apparatus is in use, comprises a transformer having its primary circuit connected to the supply mains by a relay operated by a small auxiliary transformer connected to the signalling circuit. The terminals 14, 15 are connected to the signalling system and when a load circuit is closed therein, e.g. by making a telephone call, relay 12 operated by rectified current from auxiliary transformer 5, connects the primary of the main transformer 20 to the mains 1, 2. The usual rectifying and smoothing equipment 24, 17, 26, 27 is connected between transformer 20 and the terminals 14, 15, a rectifier 28 being interposed in lead 25 to prevent relay 12 from being held operated over the main transformer.
Patent GB-1239957-A (GB)
Title: Process for the separation of acrylonitrile and acetonitrile
Inventor: HAUSWEILER ARNOLD
IPC: B01D3/40
Filed: 1968-06-24
Abstract: 1,239,957. Separating acrylonitrile and acetonitrile. FARBENFABRIKEN BAYER A.G. and ERDOLCHEMIE G.m.b.H. 24 June, 1968 [24 June, 1967], No. 29944/68. Heading B1L. [Also in Division C2] Gaseous mixtures of acrylonitrile and acetonitrile, also containing hydrocyanic acid, which mixtures are obtained by the catalytic oxidation of propylene in the presence of ammonia, are passed by line 1 to column A where the bulk of the mixture is absorbed in water containing a little acetonitrile fed in by line 7; gaseous residues including some acetonitrile pass out by line 11. Liquid effluent passes to an intermediate point of column B by line 2 to which steam is supplied by link 4 at the base and water by line 3 at the head. The overhead withdrawn by line 5 consists principally of acrylonitrile and hydrocyanic acid, while the bottoms consists of aqueous acetonitrile, some of which is fed back to column A by line 7 while the remainder passes by line 8 to a point 1 near the head of column C, to which steam is supplied by line 9. The overhead from column C removed by line 10 comprises a concentrated aqueous solution of acetonitrile, while the bottoms, consisting of water is passed back to the head of column B. If the feed gas only contains a little acetonitrile e.g. less than 320 kg. per 54,800 m<SP>3</SP>. gas, column C may be omitted and the entire bottoms from column B returned to column A, the overhead 11 containing acetonitrile being burned, part of the aqueous liquid thus freed from acetonitrile then being used as extracted liquid in column B.
Patent GB-742216-A (GB)
Title: Improvements in or relating to diels-alder reaction
IPC: C09F1/04
Filed: 1953-10-30
Abstract: Rosin is acid isomerized to a negative specific rotation [a ]D24 DEG of at least - 15 DEG  before formation of a Diels-Alder product with maleic acid or anhydride.  The rosin may be gum or wood rosin and the acid isomerization catalyst may be any strong acid, particularly sulphuric acid.  Specification 633,332 is referred to.
Patent GB-341069-A (GB)
Title: Improvements in destructive hydrogenation
IPC: C10G1/06
Filed: 1929-10-04
Abstract: Hydrogen used cyclically in a destructive hydrogenation process is partially freed from methane, ethane, and nitrogen by cooling to a low temperature after removal of products condensable at ordinary temperatures.  The cooling may be sufficient to liquefy the nitrogen; alternatively the ethane alone may be liquefied and then employed to scrub out the methane and nitrogen. Impure make-up hydrogen containing methane, nitrogen, or carbon monoxide may be added to the hydrogen cycle prior to the purifying stage; and before this latter stage the pressure of the circulating hydrogen is preferably lowered to 15-30 atmospheres, whereby hydrogen of at least 90 per cent purity may be obtained. Specification 302,629, [Class 32, Distilling &c.], is referred to.
Patent GB-424510-A (GB)
Title: Improvements relating to the attachments for mounting lighting-dynamos and allied appliances upon cycle frames
IPC: B62J6/06
Filed: 1933-10-31
Abstract: 424,510. Driving dynamos. MILLER, F. J., 9, Stonehouse Road, Sutton Coldfield. Oct. 31, 1933, No. 30210. [Class 35] [See also Group XXXI] An attachment for mounting a lighting- dynamo and a tail-lamp or reflector, or a combined tail-lamp and reflector, on the back-stay of-a bicycle is so constructed that the dynamo is elevated relatively to the lamp or reflector, so as not to obstruct the rearward projection of light from the latter. The attachment comprises a strap or elongated bracket a, adapted to carry the dynamo g and provided at the ends with two half-clips b, b<1>, which coact with separate and complementary half-clip pieces c, Fig. 4, to fix the bracket to the back-stay d.
Patent GB-673804-A (GB)
Title: Improvements in or relating to on-load tap changers for transformers
Inventor: OLSSON UNO
IPC: H01H3/40
Filed: 1950-12-11
Abstract: 673,804. Regulating switches. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET Dec. 11, 1950. No. 30211/50. Class 38 (v). [Also in Group XXXV] In an on-load tapchanging switch for transformers each movable contact is driven from a continuously rotating shaft 2 by a toothed wheel train consisting of at least three non- circular (e.g. elliptical) toothed wheels. The figure shows two contacts 8<SP>1</SP>, 8<SP>11</SP> which move step-wise over the tap contacts 141, 14<SP>1 </SP>... 14<SP>2</SP> and 151, 15<SP>2</SP> ...159 to connect varying portions of the regulating winding 10 in series with the main winding 9. The contacts move alternately a resistance 13 being included when the circuit from 12 to 9 is through the contact 8<SP>11</SP>. The contacts 8<SP>1</SP>, 8<SP>11</SP> are mechanically connected to nuts 7<SP>1</SP>, 7<SP>11</SP> which move up and down screwed shafts 6<SP>1</SP>, 6<SP>11</SP> each driven from the shaft 2 through three intermediate elliptical wheels such as 3, 4<SP>1</SP>, 5<SP>1</SP>, the arrangement producing the necessary pauses at the tap contacts. Other non-circular gear wheels 25, 26, 27 cause the movement of a contact 18 from 19 to 20 at approximately the middle of the movement of the nuts 8<SP>1</SP>, 8<SP>11</SP>, so that further movement of the nuts 8<SP>1</SP>, 8<SP>11</SP> reintroduces the regulatory winding 10 section by section but in the reverse direction.
Patent GB-1351836-A (GB)
Title: Method of measuring serum thyroxine and apparatus for use therein
IPC: G01N33/78
Filed: 1971-06-28
Abstract: 1351836 Determination of thyroxine YISSUM RESEARCH DEVELOPMENT CO OF THE HEBREW UNIVERSITY OF JERUSALEM 28 June 1971 [29 June 1970] Heading G1B Apparatus for determination of thyroxine in serum comprises a tubular body having closure means at both ends and containing a column of dextran gel cross-linked with epichlorhydrin and having a water regain of 1 to 5 gm per gm dry gel, the dextran gel being in equilibrium with an aqueous medium having a pH of at least 11. The apparatus may comprise a syringe barrel closed by polyethylene caps, the gel being retained between porous sintered polyethylene discs. In carrying out the determination, predetermined amounts of the serum and of radioactive thyroxine solution are allowed to flow into the column, the column is washed with an aqueous alkaline solution pH 8 to 10 to remove protein, a predetermined quantity of a binding agent for the thyroxine, for example human or bovine serum, human alpha globulin or bovine gamma globulin is added.to the column to partially remove the thyroxine from the column, the ratio of radioactive thyroxine retained by the column to that originally added is determined, and the thyroxine content of the serum is calculated by comparing the ratio determined and ratios obtained with known concentrations of thyroxine in serum.
Patent GB-635955-A (GB)
Title: Manufacture of dyestuffs of the anthraquinone series
IPC: C09B43/02
Filed: 1947-11-14
Abstract: Acid wool dyestuffs are manufactured by sulphonating (e.g. with oleum) a 9-benzeneazo-11 : 21-phthaloylcarbazole ("Ring Index" numbering) obtained by heating with a mixture of sodium chloride and aluminium chloride, preferably in the presence of an oxidizing agent (e.g. sodium m-nitrobenzenesulphonate), a 4-p-benzeneazoanilinoanthraquinone in which at least one of the 1-, 5- and 8-positions of the anthraquinone nucleus is occupied by an acylamino group, those not so occupied being either free from substituents or occupied by a halogen atom, in which the 2-position of the anthraquinone nucleus is either free or occupied by a halogen atom, an alkyl radical or a sulphonic acid group and the other b -positions are free or occupied by halogen atoms, and in which the aromatic nuclei of the p-benzene azoanilino group may bear substituents in any position, provided that not more than one o-position to the -NH- group is blocked. Examples describe the ring closure, followed by sulphonation, of: (1) 1-benzoylamino-2-methyl-4-(p-benzeneazoanilino) - anthraquinone; (2) 1 - benzoylamino-4-(p-benzeneazoanilino)-anthraquinone; (3) 1 - acetylamino - 2 - methyl - 4 - (p-benzeneazoalino)-anthraquinone; (4) 1-benzoylamino-5-(p-benzeneazoanilino) - anthraquinone; (5) 1 - benzoylamino - 2 - bromo - 4 - (p-benzeneazoanilino) - anthraquinone or 1 - benzoylamino - 6 - chloro - 2 - bromo - 4 - (p - benzeneazoanilino) - anthraquinone; (6) 1 - benzoylamino-4-(p-benzeneazoanilino)-anthraquinone-2 - sulphonic acid; (7) 1 - benzoylamino - 2 - methyl - 4 - (o - methyl - p - benzeneazoanilino) - anthraquinone.  Specifications 478,665 and 560,988 are referred to.
Patent GB-1041968-A (GB)
Title: Improvements in and relating to photographic cameras and shutters
IPC: G03B9/22
Filed: 1965-07-16
Abstract: 1,041,968. Photographic diaphragm-shutters. AGFA-GEVAERT A. G. July 16, 1965 [July 16, 1964], No. 30337/65. Heading G2A. A pivoted blade diaphragm-shutter of a photographic camera includes two blade rings 1, 2 carrying two or more blades 3, 4 pivoted between them, the blades being opened and closed by relative angular movement of the rings. To effect an exposure, the rings are simultaneously tensioned, then allowed to run down, movement of the ring 2 being interrupted a predetermined time after it has started to run down, thus opening the blades. The magnitude and duration of the opening of the blades (diaphragm aperture and shutter speed) thus depend on the moment when the ring 2 is stopped since it is released to run down and close the blades when the ring 1 reaches a definite stage in its run down. Tensioning of the rings is effected by anticlockwise rotation of a lever 18 (driven by, e.g., a film advancing lever) from the position shown, which rotation sets the rings through connections 51, 11, 13. Rotation of the lever 18 also rotates a pawl 30, a projection 29 of which is swung into the running down path of the ring 1 and locked there by a cam 26 of a lever 22 which is pivoted in the direction b under the action of a spring 27 when the pawl 30 is rotated. During these movements switch 37 is closed and switch 38 is opened. A cam 48 coaxial with the lever 18 prevents a pawl 42 from pivoting into engagement with toothed section 44. The lever is then released and returns to the position shown. To make an exposure from the set position, the lever 22 is pivoted clockwise closing the switch 38, allowing current to flow through a relay 40 which then rotates the pawl 42 in the direction c, keeping it out of engagement with the ring 2. Pivoting the lever 22 also releases the pawl 30 to rotate out of the path of the ring 1, which then runs down evenly under the action of mechanism 15-17, and opens the switch 37. The ring 2 runs down until the relay 40 is de-energized, which depends on the resistance of a photo-resistor 39 wired in parallel therewith. When the relay is de-energized the pawl 42 rotates clockwise into engagement with the teeth of the ring 2, which is thereby stopped until a pin 46 on the ring 1 meets a lug 45 on the pawl 42, thereby pivoting the pawl for a short distance in the direction c,thus releasing the ring 2 to run down. In another embodiment (Fig. 2, not shown) a mechanical control device is provided in the place of the electrical retarding circuit. Pneumatic retarding mechanism of variable retarding capacity may alternatively be used.